![]() This new data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet. It took 312 orbits to get a clear shot of every parcel of Earth's land surface and islands. The data was acquired over nine days in April 2012 and 13 days in October 2012. This new global view and animation of EarthÂ’s city lights is a composite assembled from data acquired by the Suomi NPP satellite. This and other VIIRS day-night band images are providing researchers with valuable data for a wide variety of previously unseen or poorly seen events. The new, higher resolution composite image of Earth at night was released at a news conference at the American Geophysical Union meeting in San Francisco. But the VIIRS day-night band can better detect and resolve Earth's night lights. Defense Meteorological Satellite Program have been making observations with low- light sensors for 40 years. ![]() The new sensor, the day-night band of the Visible Infrared Imaging Radiometer Suite (VIIRS), is sensitive enough to detect the nocturnal glow produced by Earth's atmosphere and the light from a single ship in the sea. With a new sensor onboard the NASA-NOAA Suomi National Polar-orbiting Partnership (NPP) satellite launched last year, scientists now can observe Earth's atmosphere and surface during nighttime hours. ![]() Many satellites are equipped to look at Earth during the day, when they can observe our planet fully illuminated by the sun.
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